Vision Scientific VME0007-LD Monocular Brightfield Microscope, 40x&ndash;400x Magnification, 0.65 N.A. Condenser, LED Illumination with Intensity Control, Coaxial Coarse and Fine Focus,110V 45 inclined Monocular head rotates 360 allowing for reverse position viewing and trouble-free observation for two people LED illumination with intensity control, guarantees a clear and crisp, cool-to-touch white light that lasts up to 60x longer than traditional tungsten bulbs Eyepiece with built-in pointer ensures that definite points on the slide can be easily designated and quickly identified For added safety, it is equipped with a rack-stop, preventing damage to slides and objective lenses, while the slip-clutch focusing system protects gears from damage Perfect for any educational application or classroom, elementary to high school, or for basic biological use